Liquid fuel furnace



I. PRIBBLE.

' LIQUID FUEL FURNACE. APPLICATION FILED MAY 6, 1920.

1. A8AE68L Patented Mar- 7, 1922.

2 SHEETSSHEET I.

water @E m i I. PRIBBL E.

LIQUID FUEL FURNACE.

Pr ucAnoN FILED MAY 6, 1920.

Patented Mar. 7,1922.

2 SHEETSSHEET Z.

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UNITED STATES PATENT OFFICE.

IRVIN PRIIBIBLE, OF TGPEKA, KANSAS, ASSIGNOR OF ONE-HALF T0 ROLAND CARSON PRIBBLE, OF WASHINGTON, DISTRICT OF COLUMBIA.

LIQUID FUEL FURNACE.

Specification of Letters Patent.

Patented Mar. 7, 1922.

Application filed May 6, 1920. Serial No. 379,282.

fullmprovements in Liquid Fuel Furnaces,

of which the following is a specification My invention relates generally to liquid fuel furnaces and particularly to coal oil burners of the type wherein air and steam vapor is mixed with the-oil vapor, a purpose of my invention being to provide a burner of this character which insures the proper and uniform mixing of the fluids to prevent the formation of carbon and consequently the formation of smoke or soot.

It is also a purpose of my invention to .provlde a simple and efficient means for controlling the supply of the fluids to the burner, such means being positive in its operation so as to prevent flooding of the burner.

I will describe two forms of burner and one form of'feeding apparatus, each embodying my invention, and'will then point out the novel features thereof in claims.

In the accompanying drawings;

Figure 1 is a view showing in side elevation one form of feeding apparatus embodying my invention, including one form of burner embodying my invention;

Figure 2 is a View showing'in top plan, the apparatus shown in Fig. 1. Figure 3 is a view showing in vertical section one form of fluid regulator embodying my invention;

Figure 4 is a view showing in vertical section, one form of burner embodying my invention;

Figure 5 is a view taken on the line 55 of Figure 4.

Figure 6 is a view similar to Figure 4 showing a modified form of burner.

Similar reference characters refer to similar parts in each of the several views.

Referring specifically to the'drawings, B designates a boiler of suitable construction to accommodate my improved form of burner which is designated generally at A. As shown in Figs. 4 and 5, the burner A comprises a hollow circular body 15 having a Hat bottom wall 15 and a top wall 15 which is inclined downwardly from the periphery to the centerthereof in the manner shown. The walls 15 and 15 are formed axially with openings 15 and 15 respectively, through which extends a tubular casmg C having its opposite ends closed by screw threaded caps 16 and 17 The walls of the opening 15 snugly receive the casing C threadedly engage the same to support in vertical position, while-the opening 15 1s relatively large with its walls spaced from the casing C to allow the fuel to pass exteriorly of the body 15.

At a point above or below the wall 15, preferably the latter, the casing C is formed with ports P through which the fuel vapors are adapted to passabove the body 15 and against a deflector or flame spreading plate D arranged above the body, as shown in Figure 4. The deflector D comprises a disk which is convexed to cause the vapors when impinging thereon to be directed to its periphery and downwardly on to the body 15. For feeding the necessary amount of air to the burner,-the deflector D is provided with a pipe F which is open to communicate directly with the air in the boiler room. The draft of the flue draws the air into the pipe F and it is mixed with the gases under deflector D. The amount of air admitted is regulated by a damper (not shown), either in'the chimney or the pipe connecting the furnace with the chimney. v

Liquid fuelsuch as coal oil is supplied to the burner A from a reservoir tank K, mounted on a table T such tank being connected to theburner by a pipe S, which extends vertically within the casing C and terminates at a point above the ports P, as shown in Figure 4. The supply of fuel to the burner A is controlled by a regulating device designated generally at R, which is interposed in the pipe S at a point preferably adjacent the tank K, as shown in Figures 1 and 2; As shown in Figure 3, this device R comprises a tank 20 closed by a lid 21 and having the end walls thereof formed with openings toreceive the'ends of the pipe S. One end of the pipe S is provided with a valve V pivoted at 22 and connected to a rod 23 of a float 24. By this. arrangement it fuel from the tank K. It is to be particularly noted that the end of the pipe I forms a seat for the valve V, and because the pivot of the valve is at all times submerged within the fuel, it is properly lubricated and will not stick in the open position to cause a flooding of the burner S designates a pipe for supplying water to the body 15 from a tank K, mounted on a table T. As shown in Fig. at, thepipe S communicates with the bottom of the body '15, and as shown in Figs. 1 and 2, such pipe is provided with a regulating device R identical to the device R previously described. Both pipes S and S are provided with manually operable valves V as an additional control for the liquids.

The operation of the burner A, is as follows: Because of the elevation of the fuel tank K and the water tank K, fuel and water are supplied to the casing C and the body 15 respectively, by virtue of gravity, it being understood that the level of the two liquids in the casing and body are-at all times determined by the regulating devices R and R. The control of the device R is such that the fuel never rises above the ports P. When starting the burner A crude oil is placed within the concavity formed by the wall 15", and lighted After a short time the burner becomes sufliciently heated to vaporize the fuel in casing C and to convert the water in body 15 into steam. The fuel vapor now passes out of the ports P and at this pointthoroughly commingles with the steam from body 1:"), and the resultant mixture passes out of the opening 15 and impinges on the deflector D. The mixture after striking the deflector D is directed to its edge where it burns and continues to heat the burner for further vaporizing the fuel and water. As the mixture passes upwardly to the deflector D, a thorough intermixing of the same with air is effected by the draft created in the pipe F. Because the inlet end of the pipe F is disposed in vertical alignment with the casing C and consequently axially of the burner, it will be obvious that a uniform mixing of the air, gas, and steam will be effected to produce a mixture which will burn with intense heat, and without emitting smoke or soot.

To secure to an automatic control of the burner A so that the desired temperature of a room or building can be maintained, I provide a by-pass H in the pipe S which is controlled by a manually operable valve V Between the ends of the bypass, the pipe S is formed with a thermostatically con-' trolled valve V so that when a thermostat (not shown) located at a remote point in a building is closed, the valve V will close and thus cause the fuel to flow to the burner around the by-pass H, the valve V of which latter has of course been previously set to pipe S is not in communication with the body 15 but is connected to a deflector D which is hollow to provide interiorly thereof a chamber 1G for receiving water from the pipe S. Extending upwardly from the upper side of the deflector D is a pipe 16 which is bent in the manner shown so that its outer end is disposed downwardly and axially within the opening of the deflector.

In the operation of this burner t-he'i nited oil vapor emanating from the oil within the body 15 effects a heating of the water with in the chamber 16 and steam vapor in this water passes exteriorly of the deflector through the pipe 16 where it commingles with the oil vapor as in the'first form of my invention.

It is to be particularly noted that the water within the chamber 16 serves to maintain the deflector at a comparatively low ten'iperature so that the intense heat generated by the burning fuel will be ineffective to warp or burn the material of which the 95 deflector is formed.

Although I have herein shown and de-. scribed only two forms of burners and one form of regulating device, each embodying my invention, it is to be understood that 100 various changes and modifications may be made herein without departing from the spirit of the invention and the spirit and scope of the appended claims.

Having described my invention, what I claim is 1. An oil burner, comprising a hollow body having its upper side concaved and provided with an opening, means for supplying water to said body, a casing extending through the body and through said opening, means for supplying a liquid fuel to said casing, ports formed in the casmg adjacent said opening, and a deflecting plate arranged in superposed relation to said 115 body.

2. An oil burner, comprising a hollow. body having its upper side concaved and provided with an opening. means for supplying water to said body, a casing extend 120 ing through the body and through said opening, means for supplying a liquid fuel to said casing, ports formed in the casing adjacent said opening, a convexedplate ar ranged above said body, and a pipe communicating with the plate and arranged in vertical alignment with said casing.

. 3. An oil burner, comprising a deflecting plate, a pipe communicating centrally with the upper side of the plate, means' belOW said plate for generating a fuel vapor and a water Vapor, and means for mixing and directing the fuel and water vapors substantially centrally of said plate.

4. An oil burner, comprising a circular body having the upper side thereof concaved and an opening axiallyof the body, a cas- IRVIN PRIBBI-JE, 

